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Home›Repair guides›Kohler›High Idle Speed Adjustment

Kohler CH5 / CH6 — High Idle Speed Adjustment

Adjustments · governor / high idle speed screw

For the Kohler CH5 / CH6, from the Kohler service manual.

Applies to: Kohler CH6

Before you start

  • Do not tamper with governor setting; overspeed is hazardous

Procedure

  1. Start engine and allow to warm up; place throttle control in fast/high idle position.
  2. Check engine speed with a tachometer.
  3. To increase: turn high idle speed adjusting screw out (counterclockwise) while moving throttle lever toward carburetor.
  4. To decrease: turn high idle speed adjusting screw in (clockwise) until desired speed is attained.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Recommended maximum no-load high idle speed 3750 RPM

Full service-parts list: Kohler CH6 →

Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

More Kohler repair guides →